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公开(公告)号：US20090084133A1
公开(公告)日：2009-04-02
申请号：US11863561
申请日：2007-09-28
IPC分类号： F25J3/00
CPC分类号： F25J3/04884 , F25J3/04412 , F25J3/04793 , F25J3/04818 , F25J2235/50 , F25J2245/50 , F25J2250/04 , F25J2250/20
摘要： A condenser reboiler system located within a bottom region of a low pressure column of a double column arrangement that is used in an air separation system to separate air. The condenser reboiler system incorporates first and second heat exchangers of the down-flow type that are situated in a side-by-side relationship and with the first heat exchanger being shorter than the second heat exchanger so that the first heat exchanger will remain functional after a shut-down of the air separation system when the second heat exchanger(s) are not capable of operating due to liquid dumping into a sump region of the low pressure column. The side-by-side relationship allows the column to be fabricated without excessive height.
摘要翻译： 一种冷凝器再沸器系统，其位于双塔排列的低压塔的底部区域内，用于空气分离系统以分离空气。 冷凝器再沸器系统包括下流式的第一和第二热交换器，其处于并排关系并且第一热交换器比第二热交换器短，使得第一热交换器将在第一热交换器之后保持功能 当第二热交换器由于液体倾倒到低压塔的集水区域中而不能运行时，空气分离系统关闭。 并排关系允许柱子被制造而没有过高的高度。
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公开(公告)号：US09476641B2
公开(公告)日：2016-10-25
申请号：US11863561
申请日：2007-09-28
CPC分类号： F25J3/04884 , F25J3/04412 , F25J3/04793 , F25J3/04818 , F25J2235/50 , F25J2245/50 , F25J2250/04 , F25J2250/20
摘要： A condenser reboiler system located within a bottom region of a low pressure column of a double column arrangement that is used in an air separation system to separate air. The condenser reboiler system incorporates first and second heat exchangers of the down-flow type that are situated in a side-by-side relationship and with the first heat exchanger being shorter than the second heat exchanger so that the first heat exchanger will remain functional after a shut-down of the air separation system when the second heat exchanger(s) are not capable of operating due to liquid dumping into a sump region of the low pressure column. The side-by-side relationship allows the column to be fabricated without excessive height.
摘要翻译： 一种冷凝器再沸器系统，其位于双塔排列的低压塔的底部区域内，用于空气分离系统以分离空气。 冷凝器再沸器系统包括下流式的第一和第二热交换器，其处于并排关系并且第一热交换器比第二热交换器短，使得第一热交换器将在第一热交换器之后保持功能 当第二热交换器由于液体倾倒到低压塔的集水区域中而不能运行时，空气分离系统关闭。 并排关系允许柱子被制造而没有过高的高度。
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公开(公告)号：US10295254B2
公开(公告)日：2019-05-21
申请号：US15695381
申请日：2017-09-05
申请人： Vijayaraghavan S. Chakravarthy , Hanfei Tuo , Maulik R. Shelat , James R. Dray , Nick J. Degenstein
发明人： Vijayaraghavan S. Chakravarthy , Hanfei Tuo , Maulik R. Shelat , James R. Dray , Nick J. Degenstein
摘要： A system and method for recovery of rare gases such as neon, helium, xenon, and krypton in an air separation unit is provided. The rare gas recovery system comprises a non-condensable stripping column linked in a heat transfer relationship with a xenon-krypton column via an auxiliary condenser-reboiler. The non-condensable stripping column produces a rare gas containing overhead that is directed to the auxiliary condenser-reboiler where most of the neon is captured in a non-condensable vent stream that is further processed to produce a crude neon vapor stream that contains greater than about 50% mole fraction of neon with the overall neon recovery exceeding 95%. The xenon-krypton column further receives two streams of liquid oxygen from the lower pressure column and the rare gas containing overhead from the non-condensable stripping column and produces a crude xenon and krypton liquid stream and an oxygen-rich overhead.
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公开(公告)号：US20160003539A1
公开(公告)日：2016-01-07
申请号：US14754801
申请日：2015-06-30
申请人： James R. Handley , Brian S. Powell , Henry E. Howard , Vijayaraghavan S. Chakravarthy , Maulik R. Shelat , Steven R. Falta
发明人： James R. Handley , Brian S. Powell , Henry E. Howard , Vijayaraghavan S. Chakravarthy , Maulik R. Shelat , Steven R. Falta
IPC分类号： F25J3/04
CPC分类号： F25J3/04672 , F25J3/0285 , F25J3/04412 , F25J3/04678 , F25J3/04715 , F25J3/048 , F25J3/04848 , F25J2250/02 , F25J2250/20
摘要： An argon reflux condensation system and method in which a plurality of once-through condensers are connected to an argon column of an air separation plant to condense argon-rich vapor streams for production of reflux to the argon column. Condensation of the argon-rich vapor streams is brought about through indirect heat exchange with crude liquid oxygen streams that partially vaporize and are introduced into a lower pressure column of the plant for further refinement. The flow rate of the crude liquid oxygen streams are sensed and controlled at locations in the air separation plant where the crude liquid oxygen is in a liquid state and in proportion to the size of the once-through heat exchangers. Prior to flowing into the once-through condensers, the partially vaporized crude oxygen stream enters a phase separator which separates the crude oxygen vapor from the crude liquid oxygen. The separated crude oxygen vapor bypasses the once-through condensers and is mixed with the vaporized oxygen stream that exits the one-through condensers. Feed stream flow rate to the argon column is controlled in response to air flow rate to the plant and product flow rate is controlled in response to the feed stream flow rate to the argon column.
摘要翻译： 一种氩回流冷凝系统和方法，其中多个直流冷凝器连接到空气分离设备的氩塔，以冷凝富氩蒸气流以产生回流到氩塔。 通过与部分蒸发的粗液氧气流进行间接热交换并将其引入工厂的低压塔以进一步改进而产生富氩蒸气流的冷凝。 粗液氧流的流量在空气分离装置中的位置处被检测和控制，其中粗液氧处于液态并且与直流热交换器的尺寸成比例。 在流入直流冷凝器之前，部分汽化的粗氧气流进入将粗氧气与粗液氧分离的相分离器。 分离的粗氧气蒸汽绕过直流冷凝器，并与离开单向冷凝器的蒸发的氧气流混合。 响应于到达工厂的空气流速来控制进入氩塔的进料流量，并响应于进入氩塔的进料流流量来控制产物流速。
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5.发明申请公开(公告)号：US20190072326A1
公开(公告)日：2019-03-07
申请号：US15695381
申请日：2017-09-05
申请人： Vijayaraghavan S. Chakravarthy , Hanfei Tuo , Maulik R. Shelat , James R. Dray , Nick J. Degenstein
发明人： Vijayaraghavan S. Chakravarthy , Hanfei Tuo , Maulik R. Shelat , James R. Dray , Nick J. Degenstein
IPC分类号： F25J3/04
摘要： A system and method for recovery of rare gases such as neon, helium, xenon, and krypton in an air separation unit is provided. The rare gas recovery system comprises a non-condensable stripping column linked in a heat transfer relationship with a xenon-krypton column via an auxiliary condenser-reboiler. The non-condensable stripping column produces a rare gas containing overhead that is directed to the auxiliary condenser-reboiler where most of the neon is captured in a non-condensable vent stream that is further processed to produce a crude neon vapor stream that contains greater than about 50% mole fraction of neon with the overall neon recovery exceeding 95%. The xenon-krypton column further receives two streams of liquid oxygen from the lower pressure column and the rare gas containing overhead from the non-condensable stripping column and produces a crude xenon and krypton liquid stream and an oxygen-rich overhead.
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公开(公告)号：US20170023298A1
公开(公告)日：2017-01-26
申请号：US15285557
申请日：2016-10-05
CPC分类号： F25J5/005 , F25J3/04412 , F25J3/04884 , F25J2235/50 , F25J2250/02 , F25J2250/04 , F25J2250/10 , F25J2250/20 , F25J2290/44
摘要： A system and method for the concurrent condensation of a nitrogen-rich vapor and vaporization of an oxygen-rich liquid in a distillation column based air separation unit is provided. The disclosed system includes a condenser-reboiler heat exchanger located between a lower pressure column and a higher pressure column and configured to condense a nitrogen-rich vapor from the higher pressure column and partially vaporize an oxygen-rich liquid from the lower pressure column. Within the condenser-reboiler heat exchanger, the nitrogen-rich vapor flows in an upward direction such that any non-condensables present in the nitrogen-rich vapor will accumulate proximate the upper portion or top of the condenser-reboiler modules where they can be easily removed through venting.
摘要翻译： 提供了一种用于富氮蒸气的同时冷凝和富氧液体蒸发在基于蒸馏塔的空气分离单元中的系统和方法。 所公开的系统包括位于低压塔和较高压力塔之间的冷凝器 - 再沸器热交换器，并且构造成冷凝来自较高压力塔的富氮蒸汽并且从低压塔部分蒸发富氧液体。 在冷凝器 - 再沸器热交换器内，富氮蒸气沿向上方向流动，使得存在于富氮蒸汽中的任何不可冷凝物将在冷凝器 - 再沸器模块的上部或上部附近积聚，在那里它们可以容易地 通过排气去除。
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公开(公告)号：US09453674B2
公开(公告)日：2016-09-27
申请号：US14296588
申请日：2014-06-05
申请人： Vijayaraghavan S. Chakravarthy , Michael J. Lockett , Dante P. Bonaquist , Maulik R. Shelat , Karl K. Kibler
发明人： Vijayaraghavan S. Chakravarthy , Michael J. Lockett , Dante P. Bonaquist , Maulik R. Shelat , Karl K. Kibler
CPC分类号： F25J3/0486 , F25J3/04412 , F25J3/04769 , F25J3/04787 , F25J3/04793 , F25J3/04824 , F25J3/04884 , F25J5/005 , F25J2200/52 , F25J2200/54 , F25J2250/02 , F25J2250/04 , F25J2250/10 , F25J2250/20
摘要： A method and main heat exchange system for use in a cryogenic air separation plant in which down-flow and thermosiphon heat exchangers are employed to partially vaporize an oxygen-rich liquid produced in a lower pressure column and to condense the nitrogen-rich vapor in a higher pressure column. A greater proportion of the oxygen-rich liquid can be partially vaporized in the down-flow heat exchangers than in the thermosiphon heat exchangers and the nitrogen-rich vapor condensed in the thermosiphon heat exchangers can have a higher oxygen content than the nitrogen-rich vapor condensed in the down-flow heat exchangers. This allows the higher pressure column to operate at a lower pressure than would otherwise be possible. A central conduit can extend from the higher pressure column into the lower pressure column to introduce the nitrogen-rich vapor into at least the down-flow heat exchangers for purposes of reducing pressure drop and column height.
摘要翻译： 一种用于低温空气分离装置的方法和主要热交换系统，其中使用下流和热虹吸热交换器来部分蒸发在低压塔中产生的富氧液体并将富氮蒸气冷凝在 高压塔。 富氧液体中的较大比例可以在下流热交换器中部分蒸发，而不是在热虹吸热交换器中，在热虹吸热交换器中冷凝的富氮蒸汽可以具有比富氮蒸气更高的氧含量 在下流热交换器中冷凝。 这允许高压塔在比其他可能的压力更低的压力下操作。 为了降低压降和柱高度，中心导管可以从高压塔延伸到低压塔中，以将富氮蒸气引入至少下流式热交换器中。
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公开(公告)号：US10060673B2
公开(公告)日：2018-08-28
申请号：US14754786
申请日：2015-06-30
IPC分类号： F25J3/04
CPC分类号： F25J3/04672 , F25J3/0285 , F25J3/04412 , F25J3/04678 , F25J3/04715 , F25J3/048 , F25J3/04848 , F25J2250/02 , F25J2250/20
摘要： An argon reflux condensation system and method in which a plurality of once-through heat exchangers are connected to an argon column of an air separation plant to condense argon-rich vapor streams for production of reflux to the argon column. Condensation of the argon-rich vapor streams is brought about through indirect heat exchange with crude liquid oxygen streams that partially vaporize and are introduced into a lower pressure column of the plant for further refinement. The flow rate of the crude liquid oxygen streams are sensed and controlled at locations in the plant where the crude liquid oxygen is in a liquid state and in proportion to the size of the once-through heat exchangers. Feed stream flow rate to the argon column is controlled in response to air flow rate to the plant and product flow rate is controlled in response to the feed stream flow rate to the argon column.
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公开(公告)号：US20160356546A1
公开(公告)日：2016-12-08
申请号：US15242961
申请日：2016-08-22
申请人： Vijayaraghavan S. Chakravarthy , Michael J. Lockett , Dante P. Bonaquist , Maulik R. Shelat , Karl K. Kibler
发明人： Vijayaraghavan S. Chakravarthy , Michael J. Lockett , Dante P. Bonaquist , Maulik R. Shelat , Karl K. Kibler
CPC分类号： F25J3/0486 , F25J3/04412 , F25J3/04769 , F25J3/04787 , F25J3/04793 , F25J3/04824 , F25J3/04884 , F25J5/005 , F25J2200/52 , F25J2200/54 , F25J2250/02 , F25J2250/04 , F25J2250/10 , F25J2250/20
摘要： A method and main heat exchange system for use in a cryogenic air separation plant in which down-flow and thermosiphon heat exchangers are employed to partially vaporize an oxygen-rich liquid produced in a lower pressure column and to condense the nitrogen-rich vapor in a higher pressure column. A greater proportion of the oxygen-rich liquid can be partially vaporized in the down-flow heat exchangers than in the thermosiphon heat exchangers and the nitrogen-rich vapor condensed in the thermosiphon heat exchangers can have a higher oxygen content than the nitrogen-rich vapor condensed in the down-flow heat exchangers. This allows the higher pressure column to operate at a lower pressure than would otherwise be possible. A central conduit can extend from the higher pressure column into the lower pressure column to introduce the nitrogen-rich vapor into at least the down-flow heat exchangers for purposes of reducing pressure drop and column height.
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公开(公告)号：US20160003538A1
公开(公告)日：2016-01-07
申请号：US14754786
申请日：2015-06-30
IPC分类号： F25J3/04
CPC分类号： F25J3/04672 , F25J3/0285 , F25J3/04412 , F25J3/04678 , F25J3/04715 , F25J3/048 , F25J3/04848 , F25J2250/02 , F25J2250/20
摘要： An argon reflux condensation system and method in which a plurality of once-through heat exchangers are connected to an argon column of an air separation plant to condense argon-rich vapor streams for production of reflux to the argon column. Condensation of the argon-rich vapor streams is brought about through indirect heat exchange with crude liquid oxygen streams that partially vaporize and are introduced into a lower pressure column of the plant for further refinement. The flow rate of the crude liquid oxygen streams are sensed and controlled at locations in the plant where the crude liquid oxygen is in a liquid state and in proportion to the size of the once-through heat exchangers. Feed stream flow rate to the argon column is controlled in response to air flow rate to the plant and product flow rate is controlled in response to the feed stream flow rate to the argon column.
摘要翻译： 一种氩回流冷凝系统和方法，其中多个直流热交换器连接到空气分离设备的氩塔，以冷凝富氩蒸汽流以产生回流至氩塔。 通过与部分蒸发的粗液氧气流进行间接热交换并将其引入工厂的低压塔以进一步改进而产生富氩蒸气流的冷凝。 粗液氧流的流速在工厂中在粗液氧处于液态并与直流热交换器的尺寸成比例的位置被感测和控制。 响应于到达工厂的空气流速来控制进入氩塔的进料流量，并响应于进入氩塔的进料流流量来控制产物流速。
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